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io.netty.util.concurrent.BlockingOperationException: DefaultChannelPromise@28a2b3d9(incomplete) at io.netty.util.concurrent.DefaultPromise.checkDeadLock(DefaultPromise.java:398)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.channel.DefaultChannelPromise.checkDeadLock(DefaultChannelPromise.java:157)[netty-transport-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.DefaultPromise.await(DefaultPromise.java:233)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.channel.DefaultChannelPromise.await(DefaultChannelPromise.java:129)[netty-transport-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.DefaultPromise.await(DefaultPromise.java:233)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.channel.DefaultChannelPromise.await(DefaultChannelPromise.java:129)[netty-transport-4.1.4.Final.jar:4.1.4.Final] at io.netty.channel.DefaultChannelPromise.await(DefaultChannelPromise.java:28)[netty-transport-4.1.4.Final.jar:4.1.4.Final] at com.xwtec.listener.PushFutureListener.operationComplete(PushFutureListener.java:76)[PushFutureListener.class:?] at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:514)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:507)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:486)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:427)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:129)[netty-common-4.1.4.Final.jar:4.1.4.Final] at com.relayrides.pushy.apns.ApnsClient$2$2.run(ApnsClient.java:443)[pushy-0.8.jar:?] at io.netty.util.concurrent.PromiseTask$RunnableAdapter.call(PromiseTask.java:38)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.PromiseTask.run(PromiseTask.java:73)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.safeExecute(SingleThreadEventExecutor.java:451)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:418)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:401)[netty-transport-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877)[netty-common-4.1.4.Final.jar:4.1.4.Final] at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)[netty-common-4.1.4.Final.jar:4.1.4.Final] at java.lang.Thread.run(Thread.java:745)[?:1.8.0_91]